Four geographic realms are recognized; however some species might utilize/inhabit more than one realm. For example, many species of amphibians exist in the terrestrial and freshwater realms. Similarly, anadromous fish utilize freshwater and marine realms at different stages of their lives. Please select all realms that would apply to your species within the assessment country.
Within each of the four realms, species might occur in one or more major habitat types. The ones listed below are taken from theIUCN Habitat Classification Scheme. If a species has been assessed for IUCN’s Red List, all related habitat types will be listed in the Habitat and Ecology section of the report. For a detailed explanation on each habitat type and the sub-types within them, please consult the link above. For species that have not been Red Listed, please try to select the closest match for your species following the Habitat Classification Scheme.